Picture-projecting apparatus.



R. P. DB VAULT.

PICTURE PROJEGTING APPARATUS.

APPLICATION FILED JULY 13,1912m Patented June 2, 1914.

3 SHEETS-SHEET 1.

R. P. DB VAULT.

PICTURE PROJEOTING APPARATUS.

APPLICATION IILBD JULY 13,1912. 1,098,889, Patented June 2,1914.

3 SHEETS-SHEET 2.

u ueutoz kk NM mm *W Patented June 2, 1914.

3 SHEETS-$11331 3.

R. P. DE VAULT.

PICTURE PROJECTING APPARATUS.

I APPLIGATION FILED JULY 13, 1912. 1,098,889.

UNITED STATES. PATENT OFFICE.

RALPH PULLIAM DE VAULT, F BATTLE CREEK, MICHIGAN.

PICTURE-PROJECTDIG- APPARATUS.

To all whom it may concern:

Be it known that; I, RALPH PULLIAM VAULT, a citizen of the United States, residing at the city of Battle Creek, countyof Calhoun, and State of Michigan, have invented certain new and useful Improvements in Picture-Projecting Apparatus, of which'the following is a specification.

This invention relates to improvements in picture projecting apparatus.

adapted for use as a dissolving view stereop ticon or as a moving picture apparatus, employing a single lamp only. Fourth, to provide in a picture projecting apparatus, an improved lens adjusting mechanism. Fifth, to provide in a picture pro ecting apparatus, an improved carbon or electrode supporting mechanism. Sixth, to provide in a picture projecting apparatus, an improved lamp mechanism adapted for use on d1rect or alternating currents and one in which the center of illumination may be quickly and accurately adjusted.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in.the following specification.

. The invention is clearly defined and pointed'out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a front perspective of a structure embodying the features of my invention, the moving picture mechanism proper being omitted. Fig. II is a vertical transverse section on a line corresponding to line 22 of Fig. I. Fig. III is a detail rear view, a portion'of the rear wall of the lamp housing or casing being broken away to show the arrangement of the parts within.

Specification of Letters Patent.

Patented June 2, 19141.

Application filed July 13, 1912. Serial No. 709,129.

Fig. IV is a horizontal section taken on a line corresponding to line H of Fig. II,

lamp casing supports 3, the moving picture mechanism support 14, the lens holder support 16, the lamp support 22, and the switch,

being shown in position thereon. Fig. VI is a plan of the switch in conventional form. Fig. VII is a detail section on a line corre sponding to line 7-7 of Fig. IV, showing details of the stereopticon mechanism condenser lens holder adjustment. Fig. VIII is a detail perspective view of the lamp shield 77 and its support and adjusting mechanism. Fig. IX is a detail vertical section on a line corresponding to line 9-9 of Fig. I showing structural details of the finder device.

In the drawing, similar reference characters refer-to similar parts throughout the several views, and the sectional'views are taken looking in the direction of the little arrows at the ends of-the section lines.

Referring to the drawing, the base 1 in the structure illustrated, is a board or flat plate. The lamp casing is mounted upon su port ing brackets 3 having longitudinal s ots 4. therein through which. the securing screws 5 are arranged. This permits a limited adjust-ment of the lamp casing upon the base. The lampjcasing is provided with a slide holder 6.

The stereopticon apparatus illustrated, which is of the type known as a double dissolving view stereopticon, is supported u on a suitable frame 7 having feet 8 at its or-' ward end resting on the base, and rearwardly rojecting rod-like arms 9 which project t rough holes '10 in the front wall of the lamp casing. The rear wall of the lamp casing is provided with holes 11 for these rods when the stereopticon apparatus is completely collapsed.

The bottom members 12 of the frame are supported by the clips 13 on the bottom of the casing. As the details of the projecting lenses and their mountings andadjustments form no part of my present invention, I have not illustrated or described the same herein.

The base 1 is provided with asupport 14: for the'moving picture mechanism which is not illustrated as its structure forms no part of my present invention. The condensing lens holder 'for the moving picture apparatus is mounted on a support 16 carried by the bars 17 arranged on the base. These bars are slotted at 18 to receive the securing screws 19.

As the details of the lens holder 15 form no part of this invention, they are not illustrated or described herein.

The front wall of the casing is provided with an opening 20 surrounded by the inwardly-projecting flange 21 adapted to receive the lens holder 15.

The base 22 of the lamp standard 23 is mounted-onthe plate 24 on the bars 17. The plate 24 .is slotted at 86 to receive the screw 87. On the upper end of the standard 23 is a post 25 having plate-like base portion 26* pivoted at 27 on the plate 28 car ried by the standard. The post base is adjustably secured by means of the screws 29 which engage slots 30 in the plate 28'. The adjustment is efl'ected through the'screws 31 carried by the arm 32 on the base 26 and threaded into the lug '33 on the standard plate 28. I

The holders 34 for the electrodes 35 are slidably mounted on the supports 36. These supports are disposed at right angles to eachother and are carried by a bracket 37 which is pivoted at 38 in'the upper end of the post 25. The outer end of this bracket is bent downwardly Land is engaged by the adjusting'screw 39 carried by the upwardly projecting arm 40 on the post base 26. The electrode holders 34 are provided with threaded members 41 'coacting with the adjusting screws 42 and 43 which are arranged in the channeled electrode supports 36.

J Thescrew 43 is tubular to receive a spindle 44' which is provided with a beveled gear 45 meshing with a gear 46 on the screw 42 so that'the screw 42 is actuated from the finger piece 47, the screw 43 being provided with a finger piece 48 disposed on the inside of the finger piece 47 'so that both finger pieces may be conveniently manipulated at .the same time. One of the adjusting screws is a right hand and the other is a left hand screw so that by turning both finger pieces in the same direction, the electrodes are both advanced or both retracted. The electrodes are retained in their holders by set screws 49;

The casing is provided with a slot-like opening 50 in the corner thereof through which the electrodes and their supports project intoAzhe casing. By this mounting, the

- electrodes "may be accurately adjusted rela- Y tive to each other and either for alternating or direct currents.

As a convenient means for delivering the ositive current through the electrode ad-' usted to receive the same I provide a switch consisting of a double switch blade 51 pive oted at 52 to coact with'either set of contacts 53, 53, or 54, 54. The contacts 53, 53

'and 54, 54 are connected by the crossed connections 57. See Fig. VI. It will be obvious that by shiftingthe switch 5l from one set of contacts to the other, the current will be reversed in the electrodes. This is of great convenience as it obviates the necessity for adjustin the electrodes to adapt them to the positive and negative currents.

For convenience in adjusting the lamp, I

provide a finder or peep hole device consist ing of the casing 58 having an inclined mir- The condenser lens holders 64 are mounted on supports 65 which also serve as supports for the reflectors 66 arranged one abovethe other. These supports are mounted on pivots 67 and are centrally alined with-the projector lenses, the lens holders 64 being mounted on the swinging ends of the supports. These supports 65'are adjusted by means of the screws 68 having adjustin nuts 69 thereon.' The screws are connecte by the links 70 and 71 to the supports.

For convenience in manipulation, the lamp casing is provided with a housing 72 for the adjusting nuts open at the rear of the casing. See Fig. III. By this mechanism, the lenses may be adjusted vertically to properly center them with the lamp and the reflectors 66 are simultaneously adjusted.

To adjust the lenses laterally, I provide proper relation. The stereopticon condensing system lenses are thus positioned so that they do not interfere in any way with the moving picture lenses which are ar-' ranged directly infront of the lamp while the stereopticon condensing lenses are ar- 1 ranged at one side thereof.

To guard one set of lenses from the light when the other is being used, I provide an adjustable shield 77 which is mounted on a shaft 78 having a shield carrying arm 79,

"the shaft being carried by the box-like sup- 1 porting arm 80 projecting from the electrode holder support. The lower end of.

the'shaft or spindle '78 is supported by the bracket 81. See Fig.- VIII. On the upper i end of the shaft 78 is a beveled ge-ar. 82

meshing with the pinion 83 of the adjusting shaft 84. This shaft is arranged through the sides of the box-like supporting arm 81 and projects through the openin 50 of the casing and is provided with a finger piece 85 for convenience in adjustment. This permits the shield being swung to either side of the lamp as shown by full and dotted lines in Fig. IV.

By arranging the parts as I have illustrated and described, I provide a picture projecting apparatus which is adapted for use either as a dissolving view apparatus or as a moving picture apparatus and one which can be alternated by sim le adjustments using but one source of lig it.

The lamp proper is so constructed that a maximum efliciency is secured and the lamp when adjusted is not likely to get out of adjustment through consuming of the carbon when the lamp is burning as both carbons or electrodes are horizonally disposed and the vertical plane of the point of highest illumination does not materially vary. The condensing lenses and reflectors can be easily adjusted to secure the most satisfactory results. Further, the lamp is easily adapted for direct or alternating currents as may be necessary.

I have illustrated and described m improvements in an embodiment which find practical and satisfactory. Iam aware,however that considerable variation in structural details is ossible without departing from m invention, but as the disclosures made Wlll. enable those skilled in the art to which this invention relates to adapt my improvements as conditions or circumstances require, I have not attempted to illustrate or describe the modifications herein. I desire, however, to be understood as claiming my improvements specifically in the form illustrated, as well as broadly within the scope of the a pended claims.

Having thus described my invention, what I claim is new and desire to secure by Letters Patent is:

1. In a structure of the class described, the combination with a lamp, of a lamp casing having projecting apparatus openings in its front wall, there being a single opening in front of the lamp and a pair of openings at one side one above the other; a pair of condenser lens holders; supports therefor disposed at one side of the lamp; pivots for said supports disposed in alinement with said pair of openings; reflecting members mounted on said supports in alinement with said pair of openings and at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said pivots comprising screws and links connecting said screws and supports; a housing for the adjusting nuts of said screws open at the rear of the casing; screws for laterally adjusting said supports connected to their swingim ends and arranged through the rear wail of the casing, said wall being slot-ted to receive said screws; springs arranged on said last named screws to engage said supports; and a shield mounted to be swung between the lamp and said opening in front of the lamp or between the lamp and said lens holders,

2. In a structure of the class described, the combination with a lamp, of a lamp casin having projecting apparatus openings in its front wall, there bein a single opening in front of the lamp and a pair of openings at one side one above the other; a pair of condenser lens holders; supports therefor disposed at one side of the lamp; pivots for said supports disposed in alinement with said pair of openings; reflecting members mounted on said supports in alinement with said pair of openings and at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said pivots, comprising screws and links connecting said screws and support; screws for laterally adjusting said supports connected to their swinging ends and arranged throu h the rear wall of the casing, said wall eing slotted to receive said screws; springs arranged on said last named screws to engage said sup orts; and a shield mounted to be swung etween the lamp and said opening in front of the lamp or between the lamp and said lens holders.

3. In a structure of the class described, the combination with a lamp, of a lamp casing having projecting apparatus openings in its front wall, there being a single opening in front of the lamp and a pair of openings at one side one above the other; a pair of lens holders; supports therefor disposed at one side of the lamp; pivots for said supports disposed in alinement with said pair of openings; reflecting members mounted on said supports in alinement with said pair of openings and at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said bivots; means for lateral y adjusting said supports; and a shield adapted to be adjusted between the lamp and said opening in front of the lamp or between the lamp and said lens holders.

4. In a structure of the class described, the combii'iation with a lamp, of a lamp cusing having projecting apparatus openings in its front all, there being a single opening in front of the lamp and a pair of openings at one side one above the other; a pair of lens holders; support-s therefor disposed at one side of the lamp; pivots for said supports disposed in alinement with said pair of openings; reflecting members mounted on said supports in alinement with said pair of openings and at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said pivots;-

and means for laterally adjusting said supports.

5. In a structure of the class described, the combination with a lamp, of a lamp casing provided with projecting apparatus openings; :1 pair of lens holders; supports therefor disposed at one side of the lamp; pivots for said supports; reflecting members mounted on said supports at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said pivots, comprising screws and links connecting said screws and supports; a housing for the adjusting nuts of said screws open at the rear of the casing; screws for laterally adjusting said supports connected to their swinging ends and arranged through the rear wall of the casing, said wall being slotted to receive said screws; and springs arranged on said last named screws to engage said supports.

6. In a structure of the class described, the combination with a lamp, of a lamp casing provided with projecting apparatus openings; a pair of lens holders; supports therefor disposed at one side of the lamp; pivots for said supports; reflecting members mounted on said supports at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said pivots, comprising screws and links connecting said screws and supports; screws for laterally adjusting said sup )orts connected to their swinging ends and arranged throu h the rear wall of the casing, said wall eing slotted to receive said screws; and springs arranged on said last named screws to engage said supports.

7. In a structure of the class described, the combination with a lamp, of a lamp casing provided with projecting apparatus openings; a pair of lens holders; su )ports therefor disposed at one side of the amp; pivots for said supports; reflecting members mounted on said supports at an angle to the lenses carried by said holders; means for vertically adjusting sa d supports on their said pivots, comprising screws and links connecting said screws and supports; and a housing for the adjusting nuts of said screws open at the rear of the casing.

8. In a structure of the class described, the combination with a lamp, of a lamp casing provided with projecting apparatus openings; a pair of lens holders; supports therefor disposed at one side of the lamp; pivots for said supports; reflecting members mounted on said support-s at an angle to the lenses carried by card holders; and means for verticallyadjusting said supports on their said pivots, comprising screws and links connecting said screws and su ports.

'- 9. In a structure of the class escribed,

the combination with a. lamp, of a lamp casing provided with projecting apparatus openings; a pair of lens holders; supports therefor disposed at one side of the lamp; pivots for said supports; reflecting members mounted on said supports at an angle to the lenses carried by said holders; means for vertically adjusting said supports on their said pivots; and means for laterally adjusting said supports.

10. In a structure of the class described, the combination with a lamp, of a lamp casing provided with projecting apparatus openings; a pair of lens holders; supports therefor disposed at one side of the lamp; pivots for said supports; reflecting members mounted on said supports at an angle to the lenses carried by said holders; and means for vertically adjusting said supports on their said pivots.

11. In a structure of the class described, the combination with a lamp, of a lamp casing having projecting apparatus openings, there bein a single opening in front of the lamp and a pair of openings at one side: a pair of lens holders; supports therefor disposed at one side of the lamp; reflecting members mounted on said supports; means for adjusting said supports vertically and laterally; and a shield adapted to be adjusted between the lamp and said opening in front of the lamp or between the lamp and said lens holders.

12. In a structure of the class described, the combination with a lamp, of a lamp casing having projecting apparatus openings in its front wall, there being a single opening in front of the lamp and a pair of openings at one side; means for ad usting the lamp; a pair of lens holders; supports therefor disposed at one side of the lamp; reflecting members mounted on said supports; means for adjusting said sup )orts vertically and laterally; and a shield adapted to be swung between the lamp and said opening in front of the lamp or between said lens holders.

13. In a structure of the class described, the combination with a lamp, of a lamp casing having projecting apparatus openings in its front wall, there being a single opening in front of the lamp and a pair of openings at one side; means for adjusting the lump: a mir of lens holders; supports therefor disposed at one side of the lamp; reflecting members mounted on said supports; means for adjusting said supports; and a shield adapted to be swung between the lamp and said opening in front of the lamp or between said lens holders.

14. In a structure of the class described, the combination with a lamp, of a lamp easing having projecting apparatus openings in its front wall, the bein a single opening in front of the h "-3 ant a pair of openings at one side; means for adjusting the lamp; a pairof lens holders; supports therefor disposed at one side of the lamp; reflecting members mounted on said supports; and means for adjusting saidsupports vertically and laterally.

15.. In a structure of the class described, the combination with a lamp, of a lamp casing having projecting apparatus openings in its front wall, there being a single opening in front of the lamp and a pair of openings at one side; means for adjusting the lamp; a pair of lens holders; supports therefor disposed at one side of the lamp;

reflecting members mounted on said supports; and means for adjusting said supports.

16. In a structure of the class described,

the combination with a lamp, of a suitable lamp casing; a lens and reflecting member support; a pivot; a screw for laterally adjustmg said support; and-means for verti; cally adjusting said support on its pivot comprising a screw and a link connecting said screw and support.

17. In a structure of the class described,

the combination with a lamp, of a suitable lamp casing; a lens and reflecting member support disposed at one side of the lamp; a

pivot for said support; means for vertically adjusting said support on its said pivot;

and means for laterally adjusting said support. v

18. In a structure of the class described, the combination with a lamp, of a suitable lamp casing having a projecting apparatus.

the lenses carried by said holders or between the lamp and the lens in front thereof. In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

RALPH PULLIAM DE VAULT. n 8.]

Witnesses: CHAS. F. MACKENZIE, EARL E. TENNEY. 

